What do you mean by "can't reinstall?" I've never seen the install binary fail to install on ANY machine. The only thing that manages your license is the username and password, and if they are still valid, you'll certainly be able to use them on your new machine.

Where in the process is your attempt failing, and what, if any, error messages are you seeing?

Are your old & new machines the same OS? The one thing that might fail (I'm totally guessing here) could be if your old binaries were for 32 bit and now you're trying to install them on a 64-bit OS. . .but this is a really wild stab in the dark. A bit more detail from you would go a long way. . .